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Breaker Data Adapter (BDA)
WL Circuit Breaker
Brief Description and System Requirements
The Breaker Data Adapter (BDA)
is the first circuit breaker
parameterization device to
feature an integrated webserver
for parameterization, monitoring
and diagnostics. The BDA Plus
also features an Ethernet
interface for connection to the
Ethernet, Intranet or Internet.
Description
The BDA can be used to read and
change the parameters of WL Circuit
Breakers, display measured values,
as well as visualize, analyze and
store diagnostic data.
It is comprised of a microcomputer
on which an embedded Linux
operating system featuring a web
server application runs. The HTML
pages and the Java program codes
are stored in the internal flash and
can be displayed on a browser. The
browser itself displays the HTML
pages, while the more complex
functions are implemented using
Java applets. A Java Virtual Machine
(VM) is required to run the Java
applets. This is available free of
charge for a wide range of browsers
and operating systems.
All the pages that can be displayed
are stored on the BDA in German
and English; the language is selected
when the data is called up in the
browser for the first time. A new
language can be selected during
operation.
The cable supplied is used to connect
the BDA to the WL Circuit Breaker.
The BDA can either be connected
directly to the trip unit or to the last
4/1
CubicleBUS module. The indicator
with the browser application (e.g.
laptop) is connected to the BDA
using a null modem cable.
The Breaker Data Adapter Plus
features an additional Ethernet
interface, which means that the
BDA Plus can also be addressed
via the Intranet or Internet. The
communication options available via
the Intranet or Internet are restricted
only by the network administration.
All write actions (changing
parameters or switching actions)
are password protected.
When connected temporarily, the
BDA can be used to read and change
parameters, perform diagnoses, or
display measured values. For this
reason, a magnet is supplied with
the BDA so that it can be attached to
doors and other elements containing
iron. The DIN rail installation kit
supplied can be used to connect the
BDA permanently. Depending on the
application, the BDA Plus is normally
used for a permanent connection. In
this way, it can be accessed via the
Ethernet, Intranet or Internet.
If the WL is to be switched open or
closed via the BDA, the PROFIBUS
COM15 module must also be
installed. This contains the
connections for activating the
opening and closing solenoids
and the motorized drive.
The PROFIBUS communication
function does not have to be
enabled at this point.
WL PROFIBUS Communication and Electronic Accessories • July 2004
Benefits of the BDA:
• No special software has to be
installed; the display software is
supplied with the circuit breaker
data directly from the BDA. The
appropriate help pages are also
stored directly in the BDA, which
means they are always available
when they are needed.
• The comprehensive use of Java
technology ensures the systems
can operate regardless of the
operating system. This means
that the BDA can be used with all
Windows versions, Linux, and all
other operating systems provided
by the corresponding Java Virtual
Machine.
• Smaller hand-held devices with
PocketPC as the operating system
can also be used, as can PCs or
notebooks, provided they fulfill
the system requirements.
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